[Data_Center: Short_Name='NSIDC_DAAC']
MODIS/Aqua Snow Cover Daily L3 Global 500m Grid, Version 4
 Entry ID: MYD10A1

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Summary
Abstract: MODIS/Aqua Snow Cover Daily L3 Global 500m Grid (MYD10A1) contains snow cover and quality assurance (QA) data in HDF-EOS format, along with corresponding metadata. Data files after 14 September 2003 include a snow albedo array with a 'beta' status. MYD10A1 consists of 1200 km by 1200 km tiles of 500 m resolution data gridded in a sinusoidal map projection. MODIS/Aqua V004 data extend from 04 July 2002 to present. A sample of MODIS/Aqua V003 data from 29 August 2002 (day 241) through 07 October 2002 (day 280) allows users to correlate between V003 and later versions. This collection also includes several granules that were not reprocessed into V004. MODIS snow cover data are based on a snow mapping algorithm that employs a Normalized Difference Snow Index (NDSI) and other criteria tests. The only data available for Version 4 (V004) is the Golden Month, which is a sample of V004 data covering the time period 29 August 2002 (day of year 241) through 7 October 2002 (day of year 280). The Golden Month is only available by special request by contacting NSIDC User Services. Please note that NSIDC now has a complete series of Version 5 data, which is the highest version number now available and represents the best quality of data.

Related URL
Link: View Related Information


Geographic Coverage
 N: 90.0 S: -90.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Originator/Creator: D. Hall, V. Salomonson
Dataset Title: MODIS/Aqua Snow Cover Daily L3 Global 500m Grid, Version 4
Dataset Release Date: 2000-09-01
Dataset Release Place: Boulder, CO U.S.A.
Dataset Publisher: National Snow and Ice Data Center (NSIDC)
Version: 4
Online Resource: http://nsidc.org/data/myd10a1.html


Temporal Coverage
Start Date: 2002-07-04
Stop Date: 2007-01-03


Location Keywords
GEOGRAPHIC REGION > GLOBAL LAND


Data Resolution
Latitude Resolution: 500 m
Longitude Resolution: 500 m
Temporal Resolution: Daily


Science Keywords
CRYOSPHERE >SNOW/ICE >ALBEDO    [Definition]
CRYOSPHERE >SNOW/ICE >LAKE ICE    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW COVER    [Definition]
TERRESTRIAL HYDROSPHERE >SNOW/ICE >ALBEDO    [Definition]
TERRESTRIAL HYDROSPHERE >SNOW/ICE >LAKE ICE    [Definition]
TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW COVER    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE


Platform
AQUA >Earth Observing System, AQUA    [Information]


Instrument
MODIS >Moderate-Resolution Imaging Spectroradiometer    [Information]
SPECTRORADIOMETERS    [Information]


Project
EOSDIS >Earth Observing System Data Information System    [Information]
ESIP >Earth Science Information Partners Program    [Information]


Quality
Quality indicators for MODIS snow data are represented by 'AutomaticQualityFlag' and 'ScienceQualityFlag' metadata objects, and their corresponding explanations ('AutomaticQualityFlagExplanation' and 'ScienceQualityFlagExplanation') in the CoreMetadata.0 global attribute; and also in the 'Snow Cover PixelQA' data field. These are generated during production or in post-product scientific and quality checks of the data product.


Keywords
Antarctic
Arctic
Climatology
DAAC
ECS
EOSDIS
Global Change
Gridded
Integerized Sinusoidal Grid
Lake Ice
NASA
NSIDC
Polar
Remote Sensing
SINUSOIDAL GRID
Snow
Snow Cover
Snow On Ice


Data Set Progress
COMPLETE


Data Center
NSIDC Distributed Active Archive Center    [Information]
Data Center URL: http://nsidc.org/daac/index.html
Dataset ID: MYD10A14

Data Center Personnel
Name: NSIDC USER SERVICES
 Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
 City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA


National Snow and Ice Data Center    [Information]
Data Center URL: http://nsidc.org
Dataset ID: MYD10A14

Data Center Personnel
Name: NSIDC USER SERVICES
 Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
 City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA



Distribution
Distribution_Media: upon request
Distribution_Size: 11 MB
Distribution_Format: HDF-EOS
Fees: unknown


Personnel
DOROTHY K. HALL
Role: INVESTIGATOR
Contact Address:
National Aeronautics and Space Administration (NASA) Goddard Space Flight Center (GSFC)
Mail stop 614.1
City: Greenbelt
Province or State: MD
Postal Code: 20771


VINCE V. SALOMONSON
Role: INVESTIGATOR
Phone: 801-585-9492
Email: vincent.salomonson at utah.edu
Contact Address:
University of Utah
Department of Meteorology
135 S 1460 E, Rm 809
City: Salt Lake City
Province or State: UT
Postal Code: 84112
Country: US


NSIDC USER SERVICES
Role: TECHNICAL CONTACT
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA


GEORGE A. RIGGS
Role: TECHNICAL CONTACT
Phone: 301-614-5650
Email: George.A.Riggs at nasa.gov
Contact Address:
NASA Goddard Space Flight Center (GSFC)
Science Systems and Applications, Inc.
Code 614.1
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


Publications/References
Diner, D.J., J.V. Martonchik, C. Borel, S.A.W. Gerstl, H.R. Gordon, Y. Knyazikhin, R. Myneni, B. Pinty, and M.M. Verstraete. 1999. MISR level 2 surface retrieval Algorithm Theoretical Basis Document. Pasadena, CA: Jet Propulsion Laboratory.

Earth Science Data and Information System (ESDIS). 1996. EOS Ground System (EGS) systems and operations concept. Greenbelt, MD: Goddard Space Flight Center.

Hall, D.K., G.A. Riggs, and V.V. Salomonson. September 2001. Algorithm Theoretical Basis Document (ATBD) for the MODIS Snow-, Lake Ice- and Sea Ice-Mapping Algorithms. Greenbelt, MD: Goddard Space Flight Center. http://modis-snow-ice.gsfc.nasa.gov/atbd.html.

Hall, D.K. and J. Martinec. 1985. Remote sensing of ice and snow. London: Chapman and Hall.

Hall, D.K., J.L. Foster, D.L. Verbyla, A.G. Klein, and C.S. Benson. 1998. Assessment of snow cover mapping accuracy in a variety of vegetation cover densities in central Alaska. Remote Sensing of the Environment 66: 129
-137.

Hall, D.K., J.L. Foster, V.V. Salomonson, A.G. Klein, and J.Y.L. Chien. 2001. Development of a technique to assess snow-cover mapping accuracy from space. IEEE Transactions on Geoscience and Remote Sensing 39(2): 232-238.

Hapke, B. 1993. Theory of reflectance and emittance spectroscopy. Cambridge: Cambridge University Press. Klein, A. MODIS Snow Albedo Prototype. 2003. http://geog.tamu.edu/klein/modis_albedo/ . Accessed July 2003.

Klein, A.G., and J. Stroeve. 2002. Development and validation of a snow albedo algorithm for the MODIS instrument. Annals of Glaciology 34: 45-52.

Klein, A.G., D.K. Hall, and G.A. Riggs. 1998. Improving snow-cover mapping in forests through the use of a canopy reflectance model. Hydrologic Processes 12(10-11): 1723-1744.

Markham, B.L. and J.L. Barker. 1986. Landsat MSS and TM post-calibration dynamic ranges, exoatmospheric reflectances and at-satellite temperatures. EOSAT Technical Notes 1:3-8.

MODIS Characterization and Support Team (MCST). 2000. MODIS level 1B product user's guide for level 1B Version 2.3.x Release 2. MCST Document #MCM-PUG-01-U-DNCN. MODIS Science and Instrument Team. MODIS Web. July 2003. http://modis.gsfc.nasa.gov/ . Accessed October 2000.

Pearson II, F. 1990. Map projections: theory and applications. Boca Raton, FL: CRC Press, Inc.

Riggs, G.A., D.K. Hall, and V.V. Salomonson. January 2003. MODIS snow products user guide for collection 4 data products. http://modis-snow-ice.gsfc.nasa.gov/sug_main.html. United States Geological Survey. 'Sinusoidal Equal Area.' Map Projections. 2003. http://mac.usgs.gov/mac/isb/pubs/MapProjections/projections.html#si... Accessed December 2000.

Wiscombe, W.J. and S.G. Warren. 1980. A model for the spectral albedo of snow I: pure snow. Journal of the Atmospheric Sciences 37: 2712-2733.

Creation and Review Dates
DIF Creation Date: 2004-01-20
Last DIF Revision Date: 2012-05-04

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